Are there standard advertising banner sizes?

Question

I'm designing a new site and for the first time I want to incorporate 3rd party advertising. I haven't chosen an advertising partner yet.

Are there standard banner sizes I should be designing for?

Mark Henderson · Accepted Answer · 2010-07-12 06:25:07Z

Most advertising agencies stick to a pseudo-standard for banner sizes.

You can find them here. In case that link ever goes dead, the most common in use are (in px):

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